How can 2 .net executables call functions on eachother?

if I have 2 seperate .net executables how would one exe cal开发者_JAVA技巧l functions on the other one?

.NET executables are still assemblies. From VS2008 onwards, it is trivial to add a reference to a .NET exe (in VS2005 you have to use command-line for this). So simply ensure that the target exe exposes some public classes and methods.

Use it:

Assembly ass = Assembly.LoadFile("pathtoYourExe");
Type myType = ass.getType ("Full name of type whose method you need to call");
myTypeName inst = (myTypeName) Activator.CreateInstance(myType);

But if you want to call methods of runnning application - use WCF or .NET remoting.